Senior Software Developer — 1-Year Contract (Backend & API)

Ethos Search Associates Pte Ltd; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

Ethos Search Associates Pte Ltd is seeking a senior software engineer for a 1-year contract based in One North, Singapore. The role focuses on backend modules in Python, REST API design, migrations, and infra-as-code, with tests and code reviews required.

You will contribute to frontend tasks when needed and mentor junior developers, while maintaining high-quality documentation and runbooks for live systems. This position expects strong English communication and experience with cloud platforms.

Qualifications

• 5+ years building production software with real users and releases.
• Solid Python web framework experience.
• Design and build REST APIs with auth and error handling.
• Write and deploy schema migrations for live systems.
• Author infrastructure-as-code from scratch (AWS CDK, Terraform, CloudFormation).
• Experience with commercial cloud platforms.
• Branching and PR workflow experience.
• Experience reviewing others' code.
• Writing automated tests frequently.
• CI/CD pipelines and automation experience.
• Familiar with AI-assisted development tooling.
• Strong written technical English for documentation.

Responsibilities

• Backend feature modules implemented from specs and acceptance criteria.
• Create REST API endpoints with validation, authentication, authorization and error handling.
• Apply data model changes and write migrations for live deployments.
• Author and maintain infrastructure-as-code.
• Create unit and integration tests.
• Perform code reviews and provide feedback.
• Produce technical documentation and runbooks.
• Do frontend work where required.
• Provide day-to-day technical guidance to junior developers.

Skills

Python

REST APIs

CI/CD

Database migrations

Infrastructure as Code

Cloud platforms

Code reviews

Automated testing

Frontend development

English documentation

Tools

AWS CDK

Terraform

CloudFormation

Job description

Ethos Search Associates Pte Ltd is seeking a senior software engineer for a 1-year contract based in One North, Singapore. The role focuses on backend modules in Python, REST API design, migrations, and infra-as-code, with tests and code reviews required.

You will contribute to frontend tasks when needed and mentor junior developers, while maintaining high-quality documentation and runbooks for live systems. This position expects strong English communication and experience with cloud platforms.